diff --git a/src/agenda_culturel/import_tasks/custom_extractors/associations_cf.py b/src/agenda_culturel/import_tasks/custom_extractors/associations_cf.py
index 8c65bcf..bf1ae37 100644
--- a/src/agenda_culturel/import_tasks/custom_extractors/associations_cf.py
+++ b/src/agenda_culturel/import_tasks/custom_extractors/associations_cf.py
@@ -10,9 +10,15 @@ logger = logging.getLogger(__name__)
 
 
 class CExtractor(Extractor):
+
+    patternEvent = r'^https://associations\.clermont-ferrand\.fr/evenement/([\w\-]+)'
+
     def __init__(self):
         super().__init__()
 
+    def is_known_url(url):
+        return re.match(CExtractor.patternEvent, url) is not None
+
     def extract(
         self,
         content,